Road-grading machine.



H. L. BLAIR.

ROAD GRADING MACHINE.

APPLICATION FILED JAN. 25 1915 2 SHEETS-SHEET I.

Patented Mar. 19, 1918.

H. L. BLAIR.

ROAD GRADING MACHINE.

APPLICATION men JAN. 25. ms.

Patented Mar. 19

2 SHEETSSHEET 2.

HARLEY L, BLAIR, OF LEWISTON, NEBRASKA.

RGAD-GBADING DIACIIINE.

Application filed January 25, 1915.

T 0 all whom it may concern Be it known that T, HARLEY L. BLAIR, a citizen of the United States, residing at Lewiston, in the county of Pawnee, State of Nebraska, have invented certain new and useful Improvements in Road-Grading Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

.This invention relates to road grading machines.

' T he object of the invention resides in the provision of a machine of the character named embodying an improved construction designed to render the parts of the machine easily adjustable to meet varying requirements.

A further object of the invention resides in the provision of a road grading machine which will be simple in construction, efficient in use and which can be manufactured at a relatively small cost.

WVith the above and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claim.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which- Figure 1 is a side view of the grader;

Fig. 2, a plan view of same;

Fig. 3, a longitudinal section of the grader;

Fig. 4: a partial longitudinal section looking in the opposite direction to what is shown in Fig. 3;

Fig. 5, a transverse section, and

Fig. 6, a fragment of what is shown in Fig. 5 looking in the opposite direction.

Referring to the drawings the improved grader is shown as comprising a V-shaped plow 10 to one arm of which is secured the forward end of a beam 11. Pivotally connected to the other arm of the plow 10 is the forward end of a beam 12. These beams 11 and 12 have secured to their inner sides angle members 13, the corresponding arms of said members being slotted and disposed in overlapping relation so that said slots register. Bolts 14 are passed through regis- Specification of Letters Patent.

Patented Mar. 19, 1918.

Seria1No. 4,293.

tering pairs of slots and through the medium of same the angularity of the beams 11 and 12 can be adjusted. Extending through the beams 11 and 12 at a point remote from the plow 10 is an axle 15 upon which is rotatably mounted traction wheels 16. Pivotally mounted upon the outer side of the beam 11 is a lever 17 which has journaled on one end thereof a disk 18 while the other end of said lever is adapted to be selectively engaged with the notches of a vertical member 19 mounted upon the beam 11 and whereby the position of the disk'18 relative to the beam 11 may be varied, or in other words the disk 18 is adapted to be adjusted vertically. Mounted upon the outer side of the beam 11 adjacent the rear end thereof for vertical adjustment is a bar 20 which has j ournaled on its lower end a disk 21 corresponding to the disk 18. Mounted on the inner side of the beam 11 adjacent the forward end thereof for vertical sliding movement is a bar 22 the lower end of which terminates in a rearwardly directed foot 23 adapted to engage the ground. Also mounted on the inner side of the beam 11 at the rear of the bar 22 is a standard 24: to the upper end of which is pivoted a lever 25. The forward end of this lever is connected to the upper end of the bar 22 while the rear end of said lever is adapted to be selectively engaged in the notches of the menn ber 19 to efiect vertical adjustment of the foot 23. Suitably secured to the outer side of the beam 12 and projecting beyond the lower edge of said beam is a scraper blade 26. Pivotally secured against the inner side of the beam 12 adjacent the rear end of said beam is an angle lever 27 one arm of which has rotatably mounted thereon a wheel 28. An adjusting handle 29 is suitably secured to the other arm of the lever 27 and is adapted to be selectively engaged in the notches of a vertical bar 30 secured to the inner side of the beam 12. By selectively engaging the handle 29 in the notches of the bar 30 it will be obvious that the wheel 28 can be adjusted vertically. The beam 11 has secured to its inner side between the angle members 13 an angle member 31 upon which is suitably mounted a drivers seat 32. A. clevis 33 is secured to the plow 10 whereby draft animals may be attached to the device for the purpose of moving same over the ground.

In the use of the invention the depth of the cut of the plow 10 may be varied by adjustingthe bar 22 vertically. The disks 18 and 21 serve to cut into the ground and prevent lateral movement of the machine under the influence of resistance offered to the scraper blade 26. The distance that the disks 18 and 21 cut into the ground can be Varied by vertically adjusting same in the manner heretofore described. When the scraper blade is not in use it can be lifted entirely from the ground by adjusting the wheel 28 downwardly under which condition the rear portion of the device will be supported by one of the wheels 16 and the wheel 28.

What is claimed is A machine of the character described, comprising a substantially V-shaped plow having a forwardly curved lower edge throughout the extent of one arm thereof, a laterally swinging beam pivoted to said arm at a point inwardly from its free end, a stationary beam fixed to the other arm of said plow, guide wheels adjustably connected to the outer side of the stationary beam near its ends, an adjustable trail wheel on the swinging beam at its rear end and trail ing between the beams, an outwardly curved scraper blade at the lower edge of the swing ing beam and overlapped at its front end by the curved edge on the plow, means for holding the swinging beam adjusted, and an adjustable foot on the stationary beam rearwardly of the plow and disposed centrally relative thereto. I

In testimony whereof, I affix my-signature, in the presence of two witnesses.

HARLEY L. BLAIR. Witnesses:

R. H.- FLoYD, V L. J. BLAIR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

Washington, D. G. 

